Bag



Patented Dec. 5, 1933 UNITED STATES BAG Robert B. Donnelley, Chicago, Ill., assigner to Central Waxed Paper Company, Chicagmll., a

corporation of Illinois Application December 17, 1932 Serial No. 647,759

2 Claims.

This invention relates in general to the provision of an improved lining oi waxed paper, or other material impervious to air and moisture, for the encasement of eggs and other food prod- 5 ucts in cold storage and elsewhere where it is desired to prevent evaporation of and aircirculation in and about the commodity.

The invention is particularly valuable in the cold storage of eggs, although it will be mam'- fest it has other application and use. It has been discovered that eggs in cold storage have a marked tendency to evaporate and lose weight, and to acquire a rancid or characteristic taste where free circulation of air is permitted about `the eggs. Accordingly, it has been proposed to provide a liner, impervious to air and moisture, for the egg crate or case, waxed paper being entirely satisfactory as a material for such a lining.

A principal object of the present invention is the insurance that the liner of waxed paper or other frangible material will entirely enclose the eggs within the egg crate or case, and air circulation be prevented with certainty. The invention contemplates the accomplishment of this result by so constructing the closure parts of the envelope or lining that tearing of the material will be impossible either along the lines of fold between the side or vertical walls of the envelope, or along the lines of fold between the closure parts and the body of the envelope or liner.

Another important object of the invention is the accomplishment of this result in a liner or envelope of economical construction, which may be readily installed in the box orcrate and the crate loaded and closed in known manner.

Numerous other objects and advantages of the invention will be understood from the following description, which, when taken in connection with the accompanying drawing, discloses a preferred embodiment thereof.

Referring to the drawing,

Figure l is a vertical section taken through the egg case, the wall of the liner or envelope, being shown in elevation and partially broken away;

Figure 2 is a perspective view of a liner ernbodying the instant invention; and

Figure 3 is a fragmentary sectional view taken across the line of fold between a closure iiap and the body of the liner.

For the purpose of illustrating the present invention, a cold storage egg case or crate is schematically .illitstrated in Fig. l. It comprises a bottom 11, encompassing vertical sidewalls 12, and a top 13 of usual or preferred construction. The eggs, indicated at i4, are arranged on end and between vertical partition parts 15 and horizontally embossed supporting members 16, also of usual or preferred construction. Ari-envelope or liner, generally indicated at 17, of material impervious to air and moisture, is arranged within the egg case and encloses the partition and eggasseinble. The liner 17 is preferably made of waxed paper, folded vertically along lines of fold i8 to rectangular form', the vertical edges being overlapped and joined at 19, preferably by merely heating the wax of the edges and pressing them together. The body of the liner 17 is open at its top andfis adapted to be closed by flaps or closure members 2l, foldable over on top of the egg assembly, as may be observed in Fig. 1. The flaps or closure members 21 extend throughout the width of the tops of the vertical walls of the liner, and each flap joins adjacent vflaps at the tops of the lines of fold 18.

It is important that the closure members com- Y' pletely seal the top of the liner, as tearing down along the lines ci fold ld or along the lines upon` which the flaps are folded, and which are indicated at 22, prevents the sealing of the eggs or other commodity against circulation of air. The invention contemplates reinforcement of the reln atively frangible waxed paper at the tops of the lines of fold 18 and along the lines of fold 22. This reinforcement, in the embodiment of the invention shown on the drawing, consists of a continuous or integral sheet of fabric 23 secured to the inner faces of the envelope and extending from beneath the lines 22 Yto well above them. The fabric sheet may be secured in place by merely pressing it into the wax coating of the body sheet while the wax is warm. The fabric sheet 23 is cut at the corners above the tops of the lines of fold 18, as may be observed in Fig. 2, so that it is coextensive horizontally with the iiaps 21. Thus constructed, adequate protection is given the liner against accidental tearing; and in the packaging of the eggs or other commodity rough handling will not result in destroying the sealing l I provided by the liner against air-circulation. The liner is, of course, of the rectangular shape of the wooden box or egg crate, and after the eggs have been assembled, the flaps are merely bent over into interleafed relation, as may be observed in Fig. 1.

It is thought that the invention and many of its attendant advantages will be understood from the foregoing description, and it will be apparent that various changes may be made in the form, 119

sci

construction and arrangement of the parts without departing from the spirit and scope of the invention or sacricing all of its material advantages, tlie form hereinbeore described being merely a preferred embodiment thereof.

I claim:

l. A lining envelope adapted to be disposed within a r ctangular case for eggs and the like, comprising a relatively ilexible light-Weight paper sheet folded and seamed to the shape of the case and having rectangular flaps at its top, and a reinforcing ply extending across the line of fold. between the flaps and the body of tlie envelope, said laps being adapted to be terolded to close the envelope with the edges said flaps lying parallel to and contiguous with tlie lines of fold of the adjacent iiaps, and said ply forming a reinforcing peripheral rib at the top of said envelope adapted to cooperate with tlie contiguous edges of said rectangular flaps to in the rect-angular configuration or" the top er" said envelope and forming a relatively sti abutment for the edges of said flaps for resistingthe cutting of said flaps at their lines of fold by the edges of the adjacent flaps.

2. A lining envelope adapted to be disposed Within a rectangular case for eggs and the like, comprising a relatively flexible light-Weight waxed paper sheet folded and searned to the shape of the case and. having rectangular ilaps at its top, and a reinforcing fabric extending across the line of fold between the fiaps and the body of the envelope and embedded in the wax of said paper with the Wax interlocked within the mesh of said fabric, said rectangular flaps being adapted to be interfolded to close the envelope With the edges of said flaps disposed parallel to and substantially contiguous with the lines of fold of the adjacent ilaps, and said fabric forming a reinforcing peripheral rib at tl e top of said envelope adapted to co-operate with the contiguous edges of said rectangular naps to maintain the rectangular conguration of the top of said envelope and forming a relatively stii abutment for the edges of said rectangular flaps for minimizing the wear of said flaps at their lines of fold by the contiguous edges of theiadjacent laps.

ROBERT B. DONNELLEY.

IOC 

